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Car starts and runs fine then gets to operating temp
car starts and runs fine then gets to operating temp sputters and misfires then stalls will not restart until it cools down … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
My 1989 Mercedes 560SL 137k miles has the following
My 1989 Mercedes 560SL 137k miles has the following symptoms: 1. AT idle it intermittently misfires 1-2 times every few seconds. It occurs more on cold start-up. I live in Los Angeles so normally morn… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
I ran out of gas in my 560sl and now it ideals rough and
I ran out of gas in my 560sl and now it ideals rough and stalls when cold. Otherwise runs fine.… read more
Chad Farhat
Chad Farhat
Owner
Associate Degree
9,755 satisfied customers
Have a 1988 mercedes 560sl just changed out the power
Have a 1988 mercedes 560sl just changed out the power steering pump test drove car ran perfect this morning i started it warming it up for bout 15 minutes then it started idealing rough tried to give … read more
Eric
Eric
Retired
N/A
43,919 satisfied customers
380SL: I have a 1985 Mercedes 380SL. In recent months, Ive
I have a 1985 Mercedes 380SL. In recent months, I've replaced plugs, cap, rotor and wires, fuel distributor, warm idle regulator and the idle control unit. The warm idle in drive with the AC on is 500… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
450SL: I have a 1980 mercedes 450SL that I rarely drive. 100000
I have a 1980 mercedes 450SL that I rarely drive. 100000 miles. I do keep it in the garage and start it on weekends and let it run for 30/40 mins to get nice and warm. It always starts first crank and… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
420 sel: Hello. My 1989 Mercedes Benz 420 sel has idle problems.
Hello. My 1989 Mercedes Benz 420 sel has idle problems. When first started it revs between 650 and 750 rpm up and down. Then as it warms up to normal temp it jumps to 1100 rpm. Also runs like there is… read more
Matt
Matt
Engineer
Bachelor's Degree
771 satisfied customers
300E: I have a 1990 Mercedes 300E that I just bought. It has
I have a 1990 Mercedes 300E that I just bought. It has a rough idle that gets better when warmed up. It backfires through the throttle body when you try to rev it cold. It appears to have a fairly new… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
idle was erratic, sometimes weak, sometimes revved..rpms..weather
Car has 194K. Two years ago idle was erratic, sometimes weak, sometimes revved up and down, sometimes RPMs increased when brake was applied, car stalled at light. All of this mostly in summer weather.… read more
Matt
Matt
Engineer
Bachelor's Degree
771 satisfied customers
MERCEDES BENZ: cyl..IT SURGES..COLD START..ALSO REVS UP TO 1100
MERCEDES BENZ 1993 220E 4 CYL DOHC SEDAN. IT SURGES ON A COLD START BETWEEN 1050 & 900 UNTIL IT WARMS UP ALSO REVS UP TO 1100 AND THEN DROPS TO 700 ON A WARM START… read more
snapontech
snapontech
Associate Degree
195 satisfied customers
Start car..injecter..warm car start great.Also idles to fast even when
First time start car in morning ,have to pime injecter before car will start,after warm car start great.Also idles to fast even when warm. my Mercedes-benz ( 1988 420 sel ) Thank you David L Burch… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
C280: Benz..the engine gets hot (not overheating) it..stall..die
A 1997 Benz C280. it starts easy but when the engine gets hot (not overheating) it starts to hesitate, stall and backfires. It idle good, when its already hot you cannot step on the gas because it wil… read more
Matt
Matt
Engineer
Bachelor's Degree
771 satisfied customers
93 Mercedes 300SE: Cold start; idles..smoothly..idle rough
'93 Mercedes 300SE, 3.2. Cold start; idles smoothly for about one minute then starts to idle rough. Warm start; rough idle instantly and constantly. When I attempted a to scan, it read error. I guess … read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
Mercedes benz: parking..the spark plugs, rotor..fuel filter..cylinders
why the engine mercedes benz e260 1988 stops when I go from parking to driving or from driving to reverse ?. I changed the spark plugs, rotor , cap rotor , fuel filter and the battery. It has 150 on 5… read more
Stan
Stan
Technical support engineer
Bachelor's Degree
3,418 satisfied customers
The over voltage relay in my 1990 560 SEC..rough..smooth
After I changed the 10 amp fuse in the over voltage relay in my 1990 560 SEC, the idle speed dropped to normal. A new issue immediately arose and that was the idle was now rough where before it was pr… read more
mbfixer
mbfixer
Shop manager
High School or GED
453 satisfied customers
1980 450SL: On cold start will start and stall..warmed..air horn (carb
I have a 1980 450SL roadster. On cold start will start and stall once and then keep running. When warmed up idle ok but if you you richen mixture through air horn (carb cleaner ) runs better. On road … read more
Dodge expert
Dodge expert
ASE MASTER TECH, REPAIR FACILITY OWNER
High School or GED
3,636 satisfied customers
1988 560 SL IDLES BADLY..RUNS GREAT..DIAGNOSTIC..STALLS
1988 560 SL IDLES BADLY, REPLACED SPARK PLUGS, DIST/ ROTAR, IDLE CONTROL VALVE. RUNS GREAT ABOUT 20 MPH OR HIGHER, NO MISSES ETC, IS IT A VACUME PROBLEM? CHECKED VACUME HOSES ALL OK. TRYING TO GET A 9… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
500 mercedes benz: my 1999..surges at idle and misses..warmed up
my 1999 S 500 mercedes benz surges at idle and misses during driving when it is warmed up. operates well before it reaches operating temperature. anthony… read more
Marty
Marty
Mercedes Technician
Associate Degree
57,141 satisfied customers
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Meet the Experts:

MB Paul

MB Paul

Mercedes Technician

3,567 satisfied customers

Qualified Mercedes Benz Diagnostic Technician - 20+ years experience - Workshop Foreman for Mercedes

Marty

Marty

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Bosch Certified Master Tech. Over 35 years experience.

Michael Warfield

Michael Warfield

Factory Mercedes-Benz Technician

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Matt

Matt

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Mechanical Engineer with 23 years experience in the auto industry, 8 yrs in formula 1 engine testing

promerc

promerc

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Qualified mercedes diagnostic technician & service team manager , ATA registered Master tech

Hipo64

Hipo64

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Work and diagnose electronics on daily basis.

Tim Mohr

Tim Mohr

ASE MASTER TECH

283 satisfied customers

30 YRS EXPERIENCE, FOREIGN AND DOMESTIC, GAS AND DEISEL

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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